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Electrical contact pair and connector terminal pair

a technology of connector terminals and contact points, which is applied in the direction of coupling contact members, etc., can solve the problems of poor wear resistance, decrease in the connection reliability of a pair of connector terminals, and significant wear due to adhesion, so as to improve the wear resistance of sliding and reduce the amount of sliding wear. , the effect of small friction coefficien

Active Publication Date: 2018-01-25
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a new design for an electrical contact pair and connector terminal pair that can reduce the wear and tear of contact surfaces. The first electrical contact has a layer of hard material called an AG layer, which reduces friction and wear. The contact pressure is set to be in a certain range to further improve resistance to sliding wear. The connector terminal pair includes this new electrical contact pair, which ensures high connection reliability.

Problems solved by technology

Accordingly, a pair of electrical contacts that has a contact portion in which Ag layers are in contact with each other is likely to wear due to the adhesion of Ag, and thus has poor wear-resistance.
Particularly, if the pair of electrical contacts is subjected to friction due to sliding, then the wear due to the adhesion becomes significant.
If significant wear occurs, then a base material, or a lower layer whose contact resistance is larger than that of the Ag layer will be exposed to the surface, and constitute the contact portion, resulting in a decrease in the connection reliability of a pair of connector terminals.
However, even if such a configuration is employed, there may be cases where the amount of wear in the contact portion during sliding (sliding wear) cannot be reduced sufficiently.

Method used

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  • Electrical contact pair and connector terminal pair
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  • Electrical contact pair and connector terminal pair

Examples

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embodiment 1

[0039]An electrical contact pair and a connector terminal pair according to Embodiment 1 will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, an electrical contact pair 1 of the present embodiment includes a first electrical contact 11, a second electrical contact 12, and a contact portion 13. The first electrical contact 11 includes, a first conductive base material 111, an Ag—Sn alloy layer 113 that is laminated on a surface of the first conductive base material 111 with Ni layer 112 and / or a Ni alloy layer interposed therebetween, and a first AG layer 114 that is laminated on a surface of the Ag—Sn alloy layer 113. In the first electrical contact 11, the first AG layer 114 is exposed as the outermost surface. The second electrical contact 12 a second conductive base material 121, and a second AG layer 123 that is laminated on a surface of the second conductive base material 121 with a Ni layer 122 and / or a Ni alloy layer interposed therebetween. Note that in the...

embodiment 2

[0051]An electrical contact pair and connector terminals according to Embodiment 2 will be described with reference to FIG. 3. As shown in FIG. 3, according to the present embodiment, a second electrical contact 12 of an electrical contact pair 1 has a protruding shape. Specifically, the second electrical contact 12 includes a protruding shape second conductive base material 121, a Ni alloy layer 122 that is laminated on a surface of the second conductive base material 121, and a second AG layer 123 that is laminated on a surface of the Ni alloy layer 122. The second conductive base material 121 is made of copper or a copper alloy, and has a thickness of 250 μm. The Ni alloy layer 122 has a thickness of 1 μm. The second AG layer 123 has a thickness of 1 μm.

[0052]On the other hand, in the present embodiment, a first electrical contact 11 has the shape of a plate that comes into electrical contact with the top of the protruding second electrical contact 12. Specifically, the first ele...

reference example 3

[0055]An electrical contact pair and a connector terminal according to Reference Example 3 will be described with reference to FIGS. 4 to 6. As shown in FIG. 4, a first electrical contact 11 of the present embodiment includes a bent portion 218. Specifically, the first electrical contact 11 includes a first conductive base material 111 that is folded to have the bent portion 218, an Ag—Sn alloy layer 113 that is laminated on a surface of the first conductive base material 111, and a first AG layer 114 that is laminated on a surface of the Ag—Sn alloy layer 113. The first conductive base material 111 is made of aluminum or an aluminum alloy, and has a thickness of 250 μm. The Ag—Sn alloy layer 113 has a thickness of 4 μm. The first AG layer 114 has a thickness of 1 μm.

[0056]On the other hand, in the present embodiment, a second electrical contact 12 has the shape of a plate that comes into electrical contact with the bent portion 218 of the first electrical contact 11. Specifically, ...

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PUM

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Abstract

An electrical contact pair and a connector terminal pair that can reduce the amount of sliding wear in a contact portion. The electrical contact pair includes a first electrical contact, a second electrical contact, and a contact portion. The first electrical contact includes, above a first conductive base material, an Ag—Sn alloy layer, and a first AG layer that is laminated on a surface of the Ag—Sn alloy layer, and the first AG layer is exposed as the outermost surface. The second electrical contact includes a second AG layer above a second conductive base material, and the second AG layer is exposed as the outermost surface. The contact portion is obtained as a result of a surface of the first AG layer of the first electrical contact and a surface of the second AG layer of the second electrical contact being in contact with each other.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of Japanese patent application JP2015-030389 filed on Feb. 19, 2015, the entire contents of which are incorporated herein.TECHNICAL FIELD[0002]The present invention relates to an electrical contact pair and a connector terminal pair.BACKGROUND ART[0003]In recent years, following the spread of hybrid automobiles, electric automobiles, and the like, high-current connector terminals have been used for, for example, power supply lines for supplying electric power to a motor and the like. Typically, electrical contacts of this type of connector terminal employ Ag plating, which has low contact resistance. When the connector terminals are fitted to each other, the Ag layers of electrical contacts are brought into contact with each other, and a contact portion of a pair of electrical contacts is formed.[0004]For example, Patent Document 1 (JP2013-231228A) discloses, as the above-described connector terminal, ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01R13/03
CPCH01R13/03
Inventor KATO, AKIHIROSUNAGA, TAKAHIRO
Owner AUTONETWORKS TECH LTD
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